can any one help with setting the bass crossover properly becuz i have two different choices on my reciever..denon 1911..i can set individual crossover for each speaker but i can also set a crossover for my sub under bass setting on the reciever...anyone know what to set the bass setting crossover to i can choice from 40Hz to 250Hz..would 250Hz be right so that the crossover for each speaker works instead? or should i set the same??